Esophagus stoma button

ABSTRACT

The purpose of this invention is to provide an esophagus stoma button capable of safely forming and maintaining a stoma hole provided in an esophagus and reducing the discomfortableness of a patient. To achieve the object, in the present invention, the stoma button  9  is comprised of a shaft part  1  and a flange part  2  provide at the rear end of the shaft part rounded at the tip thereof. More specifically, in the esophagus stoma button  9 , a flange part is provide at the rear end of the shaft part rounded at the tip thereof, and a lumen having a generally circular cross section in the area ranging from the shaft part to the flange part is provided, a means for fixing a catheter for infusion is provided in the flange part with a flat and generally circular shape and a means for tightly closing the opening of the flange part is provided at the opening thereof.

TECHNICAL FIELD

The present invention relates to a medical tool for reliably securing aroute for discharging bodily fluid and infusing chemical liquid oreutrophic or the like with safety, and more particularly, to anesophagus stoma button capable of forming and maintaining a stoma formedin an esophagus.

BACKGROUND OF THE INVENTION

Conventionally, especially as a method for giving nutrition through aintestine, endoscopic stomach stoma through skin (PEG) which is one ofendoscopic operations for forming a stoma in skin surfaces of stomachlumen and abdominal wall using an endoscope was developed by Gaudert(pediatric surgeon) and Ponsky (endoscopic surgeon) in 1979 (JapanesePatent Application Laid-open No.H6-503243), and some techniques usingthis have been developed and have become widespread. However, since astomach lining or an abdominal wall is subjected to centesis, thisoperation can not be used or it is difficult to use this operation “in acase in which a large amount of ascites is stored”, “in a case in whicha liver or a transverse colon exists between a stomach and an abdominalwall”, and “a case in which the patient has anamnesis of stomachoperation”.

There is a method for indwelling a tube in a stomach through a nose, butwhen the tube is allowed to stay in the stomach for a long term, a painin a nostril, a nasal vacity or a pharynx becomes strong, an ulcer isformed in the nostril and it becomes difficult to keep allowing the tubeto stay in the stomach in some cases, and pneumonia is supervenedbecause it is difficult to discharge sputum in some cases. These are notpreferable in terms of QOL.

The present inventors proposed an invention of a medical tube insertingtool and a method for using this tool in Japanese Patent ApplicationLaid-open No.H10-17994. In this invention, in order to overcome theinconvenience of the PEG and the tube through nose, a route fordischarging bodily fluid and infusing chemical liquid and eutrophicthrough esophageal is reliably secured with safety. In this invention,however, there is no detail description concerning the tube to bestayed, and since it is necessary to use a long tube when a currentlywidely used tube is used, a portion of the tube projecting from a bodybecomes long, this portion is burdensome for a patient who needs thetube in his or her body for a long term. Therefore, there is apossibility that the patient himself or herself intentionally pull outthe tube in some cases.

As a method for overcoming the inconvenience caused because the portionof the tube projecting from the body becomes long, there is proposed amedical tool comprising a mushroom-like or semi-spherical member to befixed in a body. In this medical tool, the projecting portion is reducedin size (U.S. Pat. Nos. 5,549,657, and 4863438). When this proposed toolis allowed to stay in the esophagus, however, there is a problem thatthe fixed portion becomes bulky at the entrance portion of theesophagus, and it becomes difficult to take nutrition through a mouth.

On the other hand, when the tube is allowed to stay for a long term, inorder to avoid an excessive burden on a body, it is effective to use asoft material on a shaft portion, but since the tube is inserteddirectly through the stoma when the tube is exchanged, appropriatehardness is also required. A cervix structure and the formation angle ofa stoma are different depending upon patients, and if an angle formed bya shaft part and a flange part is fixed, a burden is put on a body insome cases. When a catheter for transfusion is to be connected, it isnecessary to ensure the air-tightness of the connection and reliablefixed state. Some patients repeat vomiting after eutrophic is infusedinto a stomach. For such patient, it is necessary to insert a tip of theshaft part to a small intesine. There are problems that this insertingoperation is not easy, it takes time to allow the tube to stay in thestomach, and burdens are put on an operator and a patient mentally andphysically.

The present invention has been accomplished in view of the abovecircumstances, and it is an object of the invention to provide a medicaltool for reliably securing a route for discharging bodily fluid andinfusing chemical liquid or eutrophic or the like with safety, and moreparticularly, to provide an esophagus stoma button capable of formingand maintaining a stoma formed in an esophagus with safety whichreducing annoyance of a patient.

DISCLOSURE OF THE INVENTION

That is, the present invention of an esophagus stoma button wherein aflange part is provided at the rear end of a shaft part rounded at thetip thereof.

According to a more concrete configuration of the present invention, theesophagus stoma button is comprised of a flange part provided at therear end of a shaft part rounded at the tip thereof, a lumen having agenerally circular cross section in the area ranging from the shaft partto the flange part, a means for fixing a catheter for transfusionprovided in the flange part of flat and generally circular shape and ameans for tightly closing the opening of the flange part providedtherein.

According to another concrete configuration of the invention, theesophagus stoma button is comprised of a flange part provided at therear end of a shaft part rounded at the tip thereof, a lumen having agenerally circular cross section in the area ranging from the shaft partto the flange part, a means for fixing a catheter for transfusionprovided in the flange part of flat and generally circular shape, ameans for tightly closing the opening of the flange part providedtherein, and a check valve provided in the vicinity of the opening ofthe flange part.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of an esophagus stoma button of a firstembodiment of the present invention,

FIG. 2 is a perspective view of a esophagus stoma button of a secondembodiment of the invention,

FIG. 3 is a perspective view of one example of a cap portion in a thirdembodiment of the esophagus stoma button of the invention,

FIG. 4 is a schematic perspective view showing a structure of a flangepart of a fourth embodiment of the esophagus stoma button of theinvention,

FIG. 5 is a plan view of an esophagus stoma button of a fifth embodimentof the invention,

FIG. 6 is a sectional view of the esophagus stoma button shown in FIG.5,

FIG. 7 is a perspective view showing another example of a check valve,

FIG. 8 is a schematic view showing the esophagus stoma button and itsindwelling state in the first embodiment of the invention,

FIG. 9 is a schematic view showing the esophagus stoma button and itsindwelling state in the second embodiment of the invention,

FIG. 10 is a schematic view showing a first example for inserting theesophagus stoma button of the invention,

FIG. 11 is a schematic view showing a second example for inserting theesophagus stoma button of the invention,

FIG. 12 is a schematic view showing the indwelling state of theesophagus stoma button of the invention,

FIG. 13 is a sectional view showing one example of an attachable anddetachable stylet applied to the esophagus stoma button of the inventionand its inserted state,

FIG. 14 show an esophagus stoma button of a sixth embodiment of theinvention wherein FIG. 14(a) is a perspective view thereof and FIG.14(b) is a partial vertical sectional view of FIG. 14(a),

FIG. 15 show a flange part of an esophagus stoma button of a seventhembodiment of the invention wherein FIG. 15(a) is a perspective viewthereof, FIG. 15(b) is a partial vertical sectional view of FIG. 15(a),FIG. 15(c) is a front view showing a state in which a cap is fastened,and FIG. 15(d) is a front view showing one example of a connection tubeconnector applied to the flange portion of FIG. 15(a),

FIG. 16 are schematic side views showing the tip of a shaft portion inan eighth embodiment of the esophagus stoma button of the inventionwherein FIG. 16(a) is a schematic view showing a first embodiment of aweight added on the tip of a shaft, FIG. 16(b) is a schematic viewshowing a second embodiment of the weight added on the tip of the shaftand FIG. 16(c) is a sectional view of FIG. 16(b),

FIG. 17 is a schematic side view showing the tip of a shaft part in aninth embodiment of the esophagus stoma button of the invention, and

FIG. 18 is a schematic side view showing an esophagus stoma button of atenth embodiment of the invention.

BEST MODE FOR CARRYING OUT THE INVENTION

As shown in FIG. 1, an esophagus stoma button of a first embodiment ofthe present invention is comprised of a shaft part (1) and asubstantially disc-like flange part (2) provided on the rear end (upperend in FIG. 1) of the shaft portion (1). The shaft portion (1) iscylindrical in shape, and its tip (lower end in FIG. 1) is rounded toprevent a mucous membrane of an esophagus from being damaged. It ispreferable that the shaft portion (1) has a length suitable for thephysical constitution of a patient so that the tip of the shaft portion(1) is reliably located in the esophagus, and its thickness is equal tothat of a catheter which infuses eutrophic or chemical liquid so that astoma is maintained and the button and the catheter can easily be pulledin and out. The shaft part (1) has appropriate softness and resilienceat the normal room temperature and body heat, and preferable materialsof the shaft part (1) are synthetic resin such as soft vinyl chlorideresin, polyurethane resin, polyamide resin, elastomer thereof, siliconerubber, but the material is not limited to them. The shaft part (1) mayhave properties for maintaining its shape so that a position of theshaft part (1) in the body can be known.

FIG. 2 shows an esophagus stoma button of a second embodiment of theinvention. The esophagus stoma button is comprised of the shaft part(1), the flange part (2) and a cap part (3). In the example in FIG. 2,the shaft part (1) is cylindrical in shape, and is formed with a lumen(1 a) formed through its rear end to tip through which a guide wire ortransfusion tube is inserted. Like the example shown in FIG. 1, it isdesirable that the shaft part (1) has a length suitable for the physicalconstitution of a patient, and has such a thickness that a tube to beinserted into the esophagus stoma button can easily be pulled in andout.

In the case of the embodiment shown in FIG. 2, the eutrophic or chemicalliquid can be infused directly into a stomach (or intestine). In such acase, as shown in FIG. 12, it is necessary to allow the tip of the shaftportion (1) to stay in an appropriate position in the stomach (orintestine). For this reason, the length of the shaft part (1) ispreviously set to a length from a fistula to a stomach (or intestine),or the shaft part (1) is allowed to stay in a predetermined position andthen, the shaft part (1) is cut into a desired length, and the flangepart (2) is fitted over the rear end of the shaft portion (1). Thisshaft part (1) also has appropriate softness and resilience at thenormal room temperature and body heat, and preferable materials of theshaft part (1) are synthetic resin such as soft vinyl chloride resin,polyurethane resin, polyamide resin, elastomer thereof, silicone rubber,but the material is not limited to them. When the transfusion tube orthe guide wire is inserted or pulled out, in order to suppress theresistance, a forming material into which lubricant such as silicone oilis impregnated may be used, or an inner surface of the shaft part (1)may be subjected to a hydrophilic procedure.

The flange part (2) in the above-described esophagus stoma buttons needsto have appropriate softness since the flange part (2) comes intocontact directly with a skin. The flange part (2) also needs appropriatehardness for preventing the shaft portion (1) from being pulled into abody due to shrinking motion of the esophagus or stomach (or intestine).Thus, preferable forming materials of the flange part (2) are soft vinylchloride resin, polyurethane resin, polyamide resin, elastomer thereofand silicone rubber. If the size and thickness of the material areappropriately set, excellent softness and hardness can be obtained.

Concerning the above points, as in embodiments shown in FIGS. 14(b) and15(b), if an inner hard material (2 h) is integrally covered with softmaterial (2 s) to form the flange part (2), the same effect can beobtained. In this case, since chemical liquid or eutrophic comes intocontact with the hard material, the material which is resistant tochemicals and eutrophic (e.g., fatty emulsion) is required. Preferablematerials thereof are polyethylene resin, polypropylene resin, polyvinylchloride resin, polyurethane resin, polyamide resin, polyether sulfoneresin. Since the soft material (2 s) needs appropriate softness asdescribed above, preferable materials thereof are soft vinyl chlorideresin, polyurethane resin, polyamide resin or elastomer thereof, orsilicone rubber.

In this invention, the shaft part (1) and the flange part (2) areconnected to each other by integral forming, adhesive or fitting. In anesophagus stoma button (9) of the invention employing a using mode shownin FIG. 12, when the flange part (2) is retrofitted to the shaft part(1) in order to prevent the shaft portion (1) from being pulled into abody due to the shrinking motion of the esophagus or stomach (orintestine), it is necessary to reliably fix the shaft part (1) and aconnector (14) by a split type fixing flange (15) after the connector(14) is inserted into the rear end of the shaft portion (1) as shown inFIG. 4. In this case, since the soft shaft part (1) is sandwiched andfixed between the connector (14) and the fixing flange (15), it ispreferable to use-hard materials for the connector (14) and the fixingflange (15), and examples of the preferable material are polyvinylchloride resin, polysulfone resin, acrylic resin, ABS resin, polymethylpentene resin, polyamide resin, polyurethane resin, polyester resin orpolymer alloy thereof.

In the case of the esophagus stoma button of this invention having thelumen (1 a), the flange portion (2) is provided with a cap portion (3)for keeping the air-tightness. The cap portion (3) may be integrallyformed on the flange part (2), or the cap portion (3) may be integrallyformed on a cover (5) which covers the flange part (2) as shown in FIG.3. The shape of the cap portion (3) is not especially limited, but inorder to prevent a patient from unintentionally opening the cap portion(3), it is preferable form the cap portion (3) into a curved surfacesuch as substantially domical shape as shown in FIG. 15(c) so that thefinger or the nail of the patient can not easily catch. The esophagusstoma button (9) of the invention in the indwelling mode as shown inFIG. 12 is fixed to a patient by one needle suture in some cases.Therefore, as shown in FIGS. 2 and 3, the flange part (2) or the cover(5) may be provided at its outer periphery with a necessary number ofsmall holes (10). Further, as shown in FIGS. 14(a), 14(b), 15(a) and15(b), a slit (20) may be provided so that the esophagus stoma buttoncan be fixed by a wide band instead of fixing by means of suture.

Next, a check valve (4) shown in FIG. 6 provided in the vicinity of theflange part (2) will be explained. This check valve (4) is provided toprevent contents in a body from leaking out. Its shape, structure andmaterial are not especially limited, but it is necessary that a tube cansmoothly be pulled in and out, the air-tightness when the tube is notyet inserted can be secured and the check valve (4) is not bulky.Therefore, in this invention, it is preferable that the check valve (4)has an elastic flat-plate like structure having a cross incision (4 a)as shown in FIGS. 5 and 6, or that the check valve (4) is of a duck billtype. Preferable examples of the forming material of the check valve (4)are thermoplastic elastomer, silicone rubber and the like.

The esophagus stoma button of this invention is allowed to stay inaccordance with a state of a cervix of a patient. Thus, it is preferablethat bulk of the esophagus stoma button can be suppressed and an anglewhich is formed by the shaft portion (1) and the flange portion (2) canbe changed. FIG. 14(b) shows such an example. In this example, the shaftpart (1) is provided at its rear end with a movable connector (18)having a convex sphere, the flange part (2) is provided with a holder(19) having a concave sphere so that the shaft part (1) and the flangepart (2) can be held by each other at a predetermined angle in anydirection. In this case, since the holder (19) comes into contact with askin, it is preferable that the holder (19) is covered with softmaterial.

As in the example of allowing the esophagus stoma button to stay in thebody as shown in FIG. 12, if the tip of the shaft portion (1) is locatedin a stomach (or intestine), a transfusion catheter is connecteddirectly to the flange part (2) of the esophagus stoma button (9) whenchemical liquid or eutrophic is to be infused. In order to prevent thecatheter from being pulled out, a means for reliably fixing the flangepart (2) and the catheter to each other is required. Although thecatheter is not limited to such a structure, a tube connector (27)having a structure shown in in FIG. 15(b) is used as one example. Inthis connector (27), a retaining hook (25) formed around an outerperiphery of its body is inserted into a notch (21) formed in an upperend of the shaft part (1) and then, the connector (27) is rotated alonga groove (24), the hook (25) rides over a small projection (22), theconnector (27) is rotated through a predetermined angle until itsrotation is stopped by a small projection (23), thereby fixing theconnection tube to the esophagus stoma button. A force is applied tothis tube connector (27) in the rotational direction when the tube isconnected, but the force at the time of connection of the tube is notapplied in a direction in which the stoma is pushed and thus, the QOLcan further be enhanced. If the connector (27) is provided at its lowerconnecting portion with a seal ring (26), the air-tightness can bemaintained.

When the tip end of the shaft part (1) of the esophagus stoma button ofthis invention is allowed to stay in a stomach or a small intestine, asshown in FIGS. 16(a) to (c), if the shaft is provided at its tip with aweight (28), the inserting properties can be enhanced. A shape andmaterial of the weight (28) are not limited, but as shown in FIGS. 16(a)to (c), it is possible to preferably use a plurality of metal or ceramicspherical or cylindrical weights (28) as used in a general ileus tube, aspherical cylindrical weight (28) which is provided with a small holesuch as to penetrate a central portion of the weight (28) and which iscovered with a soft tube, or a spherical cylindrical weight (28) whichis provided with a small hole such as to penetrate a central portion ofthe weight (28) and which is inserted into a tube or a spring andcovered with a soft tube.

In the esophagus stoma button of this invention, a material havingsoftness as high as possible is used for the shaft part (1) which staysin a body, and the esophagus stoma button may be provided with anattachable and detachable wire or the like so that the insertingproperties are not deteriorated. A shape, a structure and a material ofthe wire are not especially limited, but as shown in FIG. 13 forexample, a preferable wire has a fixing tool (16) for fitting a metalstylet (17) provided at its tip with a fine ball (17 a) into the flangepart (2).

In the esophagus stoma button of the invention, when the tip of theshaft part (1) is allowed to stay in a small intestine, if the tip isprovided with a balloon (29) as shown in FIG. 17, the insertingproperties can further be enhanced. The balloon (29) is expanded andshrunk for confirmation and then, the balloon (29) is inserted into abody. When the balloon (29) is inserted through a sheath tube, if theballoon is not reliably shrunk due to a wrinkle formed after theshrinkage, the catheter can not be inserted into the sheath. Therefore,a material having excellent shrinking properties, and silicone rubber,natural rubber, isoprene rubber and the like are used.

When the shaft portion (1) of the esophagus stoma button of theinvention is allowed to always stay in a body and it is necessary toprovide its body portion with a fixing section, it is preferable thatthe shaft part (1) catches on a stomach cardia. A balloon which closesthe entire cardia is not preferable because the balloon hinders thepassage of saliva or contents obtained through a mouth by means ofswallow training. Thereupon, in the present invention as shown in FIG.18, the tip end of the shaft portion (1) is of a Malecot type structure(30). This structure is preferable because the entire cardia is notclosed. A shape, a structure and a material thereof are not especiallylimited, but in order to maintain the shape in a stomach for a longterm, a structure in which a shape memory alloy is embedded in theMalecot section is preferable.

Next, a using method of the esophagus stoma button of the presentinvention will be explained using the drawings. According to theesophagus stoma button of the first embodiment as one example, as shownin FIG. 10, a route extending to the esophagus (6) from outside of bodyis secured first, and a stay-tube (11) is inserted for dischargingbodily fluid or infusing chemical liquid or eutrophic. After a fistulais completed, the esophagus stoma button (9) of the present invention isinserted along the stoma such that its tip (tip of the shaft portion(1)) is directed toward an anus, and the flange portion (12) is fixed bymeans of a tape or the like. With this operation, as shown in FIG. 8,since a portion (flange portion (2)) projecting from body surface isflat and extremely small, even if the esophagus stoma button (9) isallowed to stay in the body for a long term, it is possible to largelyreduce the burden on a patient, and it is possible to largely reduce theadverse possibility that the patient himself or herself intentionallypulls out the tube. When bodily fluid is to be discharged or chemicalliquid or eutrophic is to be infused, the esophagus stoma button (9) ispulled out, the stay-tube (11) is inserted from the stoma, its tip isallowed to stay at a desired position and then, a predeterminedprocedure is carried out. After the predetermined procedure iscompleted, the stay-tube (11) is pulled out, and the esophagus stomabutton (9) is allowed to stay in the body again as described above.

When an esophagus stoma button (9) having a lumen (1 a) of the secondembodiment of the present invention shown in FIG. 2 is used, a routeextending to the esophagus (6) from outside of body is secured and atthe same time, the esophagus stoma button (9) of the invention isallowed to stay in the stoma such that its tip is directed an anus. Thatis, as shown in FIG. 11 for example, a dilator (13) into which theesophagus stoma-button (9) is previously fitted is inserted into a routeformed in the esophagus (6) from the outside of the body along a guidewire (12) and then, the guide wire (12) and the dilator (13) are pulledout, and the esophagus stoma button (9) is allowed to stay in the body.Alternatively, the esophagus stoma button (9) is inserted into a sheathtube which is capable of being divided in the longitudinal direction andwhich is allowed to stay in a route formed in the esophagus from theoutside of the body and then, the sheath tube is pulled out whiledividing the same, and the esophagus stoma button (9) is allowed to stayin the body. Alternatively, the esophagus stoma button (9) may beallowed to stay in the body by a combination of the above-described twoways. Then, the esophagus stoma button (9) is fixed by a medial tape, afixing band or one needle suture.

According to the esophagus stoma button of the second embodiment of thepresent invention, as shown in FIG. 9, since the shaft part (1) is ofcylindrical, the tube (8) for discharging bodily fluid or infusingchemical liquid or eutrophic can freely be inserted and pulled outbefore the stoma is completed. Thus, when procedure is not required, thetube (8) can be pulled out. In that case, since the projecting portionfrom the body is flat and small, it is possible to free a patient frominconvenience of the tube projecting outside from the body from aninitial stage of the procedure. When procedure such as discharging ofbodily fluid or infusion of chemical liquid or eutrophic is not carriedout, a plug (3 a) of the cap portion (3) provided on the flange part (2)is inserted into the opening of the lumen (1 a) of the shaft portion(1), and contents are prevented from leaking from the body. Since thecap portion (3) is connected to the flange part (2), there is no adversepossibility that the cap portion (3) is lost when it is not required.Since the check valve (4) is provided in the vicinity of the flange part(2), it is possible to reliably prevent the contents from leaking outfrom the body, and it is possible to avoid inconvenience of patient or atender such as contamination caused by the leakage.

When the tip of the shaft part (1) is allowed to stay in a stomach (orintestine) also as shown in FIG. 12, the esophagus stoma button (9) ofthe present invention is inserted in the above-described method, butespecially when the esophagus stoma button (9) is allowed to stay in theintestine, after the shaft part (1) of the esophagus stoma button isinserted up to the stomach, the guide wire is inserted to a portion ofthe shaft part (1) closer to its tip in the esophagus stoma button (9),the weight (28) is inserted into a pylorus of the stomach while turningthe patient and then, the shaft part (1) is pushed toward the anustogether with the guide wire or fluid is infused into the balloon (29)to expand the same, and the shaft is pushed toward the anus byperistalsis of the intestine. When the esophagus stoma button is to bereplaced after a stoma is completed, if the esophagus stoma button is tobe inserted into a stomach and the shaft part (1) is soft, after theesophagus stoma button is inserted in a state in which the button isintegral with the stylet (17), the soft tube can be allowed to stay in abody by pulling out only the stylet (17), and a burden can be eliminatedfrom a living body. When eutrophic is to be infused, if the transfusiontube is connected and fixed to the flange part (2), the procedure canreliably be carried out. After the procedure is completed, thetransfusion tube is detached, and the cap portion (3) is attached. Withthis operation, leakage can be prevented. If the shape of the capportion (3) is curved surface shape which is not catchy, the cap is notdetached unintentionally. Thus, when the tip of the shaft part (1) islocated in a stomach (or intestine), it is unnecessary to insert or pullout the tube for discharging bodily fluid or infusing chemical liquid oreutrophic whenever such procedure becomes necessary. Thus, trouble of apatient or a tender can largely be reduced. If the patient repeats thepulling-out action of the tube by himself or herself, the tube is fixedat the cardia by allowing the tube to stay in the body such that theMalecot type structure (30) of the shaft is located at the cardia, andit is possible to prevent the esophagus stoma button of the presentinvention from being pulled out.

INDUSTRIAL APPLICABILITY

According to the present invention as described above, when proceduresuch as discharging of bodily fluid or infusion of chemical liquid oreutrophic is carried out through a route formed in an esophagus, a tubecan be pulled out or it is unnecessary to pull out the tube when suchprocedure is not carried out. A portion of the esophagus stoma buttonwhich stays in a body instead of the tube and which projects from thebody is extremely small. Therefore, even if the esophagus stoma buttonis allowed to stay in the body for a long term, a burden on a patientcan largely be reduced, and the adverse possibility that the esophagusstoma button is intentionally pulled out by the patient can also bereduced largely.

1. (Canceled)
 2. An esophagus stoma button, wherein a flange part isprovided at the rear end of a shaft rounded at the tip thereof, which isformed to enable an angle formed by the flat surface of the flange partto come into contact with skin and a longitudinal direction of the saidshaft to set freely.
 3. An esophagus stoma button, wherein a flange partis provided at the rear end of a shaft part rounded at the tip thereof,and a lumen having a generally circular cross section in the arearanging from the shaft part to the flange part is provided, a means forfixing a catheter for transfusion is provided in the flange part with aflat and generally circular shape and a means for tightly closing theopening of the flange part is provided at the opening thereof.
 4. Theesophagus stoma button according to claim 3, wherein a check valve isprovided in the vicinity of the opening of a flange part.
 5. Theesophagus stoma button according to claim 3, wherein an attachable anddetachable metal wire is provided in the area ranging from the openingof a flange part to the vicinity of the tip of a shaft part.
 6. Theesophagus stoma button according to claim 3, which is formed to enablean angle formed by the flat surface of a flange part to come into touchwith skin and the longitudinal direction of a shaft to set freely. 7.The esophagus stoma button according to claim 3, wherein a plurality ofweights with a spherical shape made of metal or ceramic, or a sphericalor cylindrical weight having a small hole penetrating the central partof the weight is provided at the tip of a shaft part.
 8. The esophagusstoma button according to claim 3, wherein an expandable and shrinkableballoon is provided at the outer side of the shaft part, a lumen rangingto the balloon is provided in the shaft part, a means for tightlyclosing fluid infused into the balloon ranging to the lumen and a meansfor connecting an attachable and detachable tool to infuse the fluid isprovided in the flange part.
 9. The esophagus stoma button according toclaim 3, wherein a Malecot type fixing means is provided in the tip of ashaft part.
 10. An esophagus stoma button wherein a flange part isprovided at the rear end of a shaft part rounded at the tip thereof, alumen having a generally circular cross section in the area ranging fromthe shaft part to the flange part is provided, a means for fixing acatheter for transfusion is provided in the flange part with a flat andgenerally circular shape and a means for tightly closing the opening ofthe flange part is provided the opening thereof, a check valve isprovided in the vicinity of the opening of the flange part.
 11. Theesophagus stoma button according to claim 10, wherein an attachable anddetachable metal wire is provided in the area ranging from the openingof the flange part to the vicinity of the tip of a shaft part.
 12. Theesophagus stoma button according to claim 10, which is formed to enablean angle formed by the flat surface of a flange part to come intocontact with skin and the longitudinal direction of a shaft part to setfreely.
 13. The esophagus stoma button according to claim 10, wherein aplurality of weights with a spherical shape made of metal or ceramic, ora spherical or cylindrical weight having a small hole penetrating thecentral part of the weight is provided at the tip of a shaft part. 14.The esophagus stoma button according to claim 10, wherein an expandableand shrinkable balloon is provided at the outer side of a shaft part, alumen ranging to the balloon is provided in the shaft part, a means fortightly closing fluid infused into the balloon raging to the lumen and ameans for connecting an attachable and detachable tool to insufe thefluid is provided in a flange part.
 15. The esophagus stoma buttonaccording to claim 10, wherein a Malecot type fixing means is providedin the tip of a shaft part.